<!DOCTYPE html>
<html>
<head>
	<meta charset="UTF-8">
	<title>JS</title>
<link rel="stylesheet" href="./style.css">
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
</head>
<body>

<header>1</header>
<mani>
	<div class="container">
		<nav>2</nav>
	</div>
</mani>
<footer>3</footer>

	<script src="js/jquery-3.2.1.min.js"></script>
	<script>
	  alert("第一个javaScript!")
	</script>
</body>
</html>				